Crusher bowl locking means



Feb. 21, 1961 M. M. DORSEY CRUSHER BOWL LOCKING MEANS Filed July 29,1958 3 Sheets-Sheet 1 11 INVENTOR H 5 m M m m M Feb. 21, 1961 M. M.DORSEY 2,972,448

CRUSHEIR BOWL LOCKING MEANS Filed July 29, 1958 5 Sheets-Sheet 2INVENTOR.

ATTORNEYS Feb. 21, 1961 M. M. DORSEY 2,972,448

CRUSHER BOWL. LOCKING MEANS Filed July 29, 1958 3 Sheets-Sheet 3 i I E1; 5o 54 y 52 i 0 i 72 5 7 5, g. 'V $5 :\4

\ y g, /4e 55 5% a 2% 50 INVENTOR.

i Mmcm M. 00/255) Y BY 711111 6 8 6 y/zmwm m ATTORNEYS CRUSHER BOWL LKNGMEANS Mercer M. Dorsey, 461 La Mina Ave., Ajo, Ariz.

Filed July 29, 1958, Ser. No. 751,784

2 Claims. (Cl. 241-'286) The present invention relates to a releasablepressureapplying mechanism for a bolt and nut assembly.

An object of the present invention is to provide a mechanism which lendsitself to applying pressure to a bolt and nut assembly used in a coneore crusher to secure the concave elements which support the stationarymantle above the gyratory cone of the crusher, and one which is quicklyreleasable so that the concave element may be rapidly shifted relativeto the cone.

Another object of the present invention is to provide a releasablepressure-applying mechanism for a bolt and nut assembly used in a coneore crusher to secure the concave element relative to the gyratory coneof the crusher which is efficient in action, one which may be operatedwith a minimum of labor and time, and one which is economicallyfeasible.

These and other objects and advantages of the present invention will befully apparent from the following de- Figure 3 is an elevational view,on an enlarged scale,

of the mechanism shown in Figures 1 and 2;

Figure 4 is a sectional view in elevation of the mechanism shown inFigure 3;

Figure 5 is a sectional view taken on the line 5-5 of Figure 4;

Figure 6 is a fragmentary sectional view, taken on the line 66 of Figure4;

Figure 7 is a plan view of one of the nuts used with the cone crusher;

Figure 8 is an elevational view with a part broken away of one of thestuds used in the cone crusher;

Figure 8a is a sectional view taken on the line 8a-8a of Figure 8.

Figure 9 is a plan view of a portion of the crusher shown in Figure 2,with a modified form of the present invention installed thereon;

Figure 10 is a fragmentary plan view of a portion of the assembly shownin Figure 9; and

Figure 11 is a sectional view, on an enlarged scale, taken on the line1111 of Figure 10.

Referring in greater detail to the drawings in which like numeralsindicate like parts throughout the several views, in Figure 1 thereference numeral 20 indicates an upstanding frame member of a cone orcrushing apparatus having a cylinder 22 in which is housed the gyratorymotion producing mechanism for the crushing cone 24 which is positionedwithin the frame 20. A crushing mantle 26 is held stationary above thecone 24 on the underside of a concave supporting element 28 positionedwithin and threadedly attached to a supporting ring 30. The ring 30 iscarried by an outwardly projecting flange 32 on the upper end of theframe member 20.

A plurality of threaded lugs 34 project in spaced rela tion from theouter periphery of the concave supporting element 28, the bore througheach lug 34 extending vertically. A guard 36, of L-shapedcross-sectional configuration, is positioned in inverted superimposedrelation with respect to the ring 39 and is freely movable therearoundwith the long leg resting upon the ring 30. The short leg serves as ashelf 38, annular in form, superimposed in spaced relation with respectto the lugs 34 and carried by the ring 30.

An upstanding stud 40 extends through each lug 34 and through theadjacent portion of the shelf 38 and is in threaded engagement with thelug 34. The portion of each stud 40 adjacent the upper end projectsbeyond and above the shelf 38. A lock nut 42 is threadedly engaged onthe lower end portion of each stud 49 for securing the latter againstrotation within the respective lug 34.

A nut 44 is in threaded engagement with a projecting portion of each ofthe studs 40, each nut 44 being spaced above the shelf 38.

The components of the cone or crushing apparatus, as above described,are conventional and the nut 44 on each stud 4% is normally in abuttingengagement with the top surface of the adjacent portion of the shelf 38.

Disposed between the nut 44 and the shelf 38 is a pressure-applyingmechanism which constitutes the present invention and which isdesignated by the numeral 46. The tightening of the nuts 44 serves tosecure the threaded upright portion of the concave supporting element 23to the ring 30 against relative movement therebetween. Y t

in the past, with the pressure-applying mechanism 46 omitted, when itwas desired to adjust the mantle 26 relative to the upper surface of thecone 24, it was necessary to loosen each nut 44 so that the concaveelement 28 could be rotated in its threaded engagement with the threadedportion of the ring 30 for up and down movement relative to the cone 24.This in the past was a tedious operation requiring that the operation ofthe crusher be stopped for a period of time.

Other means have been provided for securing the concave element 28 tothe ring 30 and such means has employed studs which are slotted withappropriately sized and shaped wedges engaging in the slots of the studsto hold the shelf in the position toward the lugs. The removal of suchwedges entails a loss of operating time for the crusher and frequentlycreated a hazard from the flying wedges as they were knocked from theirrespective studs. The present invention consists in an improvement tosuch a cone or crushing apparatus and consists in a releasable pressureapplying mechanism interposed between the nut 44 of each stud 40 and theadjacent portion of the shelf 38.

The pressure applying mechanism of the present invention designated inFigure 1 by the numeral 46 comprises, Figures 3 to 6, a pair of abutmentelements 48 and 54} connected together for movement toward and away fromeach other. The mechanism 46 is positioned so that the abutment elements48 and 50 surround the portion of each stud 44) between the adjacent nut44 and the adjacent portion of the shelf 3% with one of the abutmentelements, the upper one 48, hearing against the nut 44 and the other orlower abutment element Ell bearing against the adjacent portion of theshelf 38.

As will be seen in Figure 4, the pressure applying means within themechanism 46 consists in a plurality of fluid operated hydrauliccylinder assemblies with the abutment element 48 in the form of a ringhaving spaced recesses 52 each receiving the upper end of a piston 54slidable in a bore 56 provided in a cylinder 58 rising from the abutmentelement 50. The lower end of each Patented Feb. 21, 1961.

cylinders 58 simultaneously.

. crusher.

piston 54 carries a sealing element 60 fixed thereto by means of capscrews 62. The abutment element 50 is provided with a circular channel,shown in dotted lines .in Figure 6 and designated by the referencenumeral 64, closed on its lower end by a sealing member 66 (Figure 4)and forming'a conduit'connecting all of the bores 56 together. A conduit68 is threaded in the side of .the element 50 and isconnected incommunication with av channel 64. A source of fluid under pressure (notshown) is connectable to the conduit 68 for raising the abutment member48 relative to the element 56 and to thereby secure and lock the concavesupporting element 28 to the ring 30 as a result of the securingpressure against the nut 44 and the adjacent portion of the shelf 38.

. An outer sleeve 79 and an inner sleeve 72, Figure 4,

depend from the ring-shaped abutment element 48 and serve as guides forthe movement of the element 48 relative to the element 50. The upper endof each cylinair cylinders, the releasable pressure applying means isactuable to direct securing pressure against the nut 44 and the adjacentportion of the shelf 38 for locking the :concave supporting element 28to the supporting ring 3i) and being actuable upon release to relievesuch securing pressure against the nut and shelf and...permit movementof the concave supporting element 28 relative to the ring 36 foradjustment of the mantle 26 toward and away from the cone 24.

In operation, assuming that the'concave supporting element 28 has beenrotated in the threaded supporting ring 30 to the set position and thenuts 44 turned down tightly against the upper abutment elements 43 or 98of the pressure applying mechanisms 46 or 92, and play appears betweenthe nuts 44 and the upper abutment ele ments 48 or 98, due to any wearbetween the nuts 44 and studs 40, the nuts 44 are turned down tightlyagainst the upper abutment elements48 or 98, whereupon air isspacedrelation and all connected together by a single conduit 76 whichleads to a valve assembly 78 for controlling the admission of hydraulicfluid into each of the In Figure 2 the reference numeral 85* indicatesthe driving pulley for the cone or In Figure 7 is shown a nut 44' whichis adaptable for use with each mechanism 46, such nut 44' being provided(with broken threads 84. V In Figure 8 astud 40' is shown 'WhiCl'l isadaptable for use with the nut 44', such stud 40 being provided withopposed flat surfaces as at 90, Figure 8a. In use of the nut 44 and thestud 40, the nut 44' is applied to the stud 40' so that the flatsurfaces 7 90 of the stud are in registry with the broken threadsapplied to the nut 44' causes the brokenthreads 84 of the nut 44' tothreadedly engage the broken threads 41' on thestud 40'. a I

In Figure 9 is shown a modified form of the means for applying pressureto the nuts 44 and adjacent portions of the shelf 38 of the ore crusher,such pressure applying mechanism being designated generally by thereference numeral 92 and including a pair of air cylinders 94 and96arr'anged on each side of each mechanism 92.

The mechanism 92 is shown in Figures '10 and 11 and comprises an upperabutment member 98 and a lower abutment member 100 connected together bysliding pins 192 dependingly carried by the member 98. The structure ofeach air cylinder 94 and 96 is identical and will sealing member 196 andis connected by a piston rod 108 to one .end of a rocking lever 110. Anarm 112 projects outwardly from the lower abutment member 100 and formsa support for a pivot pin 114 carryingthe lever 110. The inner end ofthe lever 116 bears against the underside of the adjacent pin 102 andeffects the upward movement of the member 98 upon the admission of airinto the cylinder 94 through the inlet conduit 116. n V

The abutment members 98 and 109 or the form of Figures 10 and 11 arering-shaped and surround the portion of each studAt) between theadjacent nut 44 and the adjacent portion of the shelf 38 with one of theabutment members or elements, the upper one 98, bearing against the nut44 and the otherabutment member or element 109 bearing against theadjacent portion of the shelf 38.

In Figure 9 it will be seen that a supply conduit 118 connects the. air'cylinders 94 and 96 of each mechanism '92 together. Upon admission ofair into the associated admitted to the cylinders of the pressureapplying mechanisms 46 or 92 to move the upper abutment elements 48hr 98away from the lower abutment elements 50 or 100 and thereby applypressure to both the shelves 38 and the nuts 44 and pull the threads onthe concave supporting element 28 intotight threaded engagement with thering 30." Should it be desired to change the setting of the mantle 26relative to the cone 24, the air pressure is released from the cylindersof the pressure applying mechanisms 46 or 92 enabling the upper abutmentelements 48sor 98 to move toward the lower abutment elements 50 or 100,the nuts 44 reversely turned the desired degree, and the concavesupporting element 28 rotated in the supporting ring 30 the desiredextent, whereupon the nuts 44 are turned down tightly against the upperabutment elements ,48 or 98 followed by admission of air 'to thecylinders of the pressure applying mechanisms 46 operated. a

While only preferred embodiments of the present invention have beenshownand' described, other embodiments'are contemplated and numerouschanges and modifications may be made therein without departing from thespiritof the invention as set forth in the appended. claims. i

What is claimed is:

1. In a cone ore crushing apparatus including an up' standing framemember having an outwardly projecting flange on the upper end thereof, asupporting ring carried by said flange, a concave supporting elementpositioned within said ring and threadedly attached to said ring, aplurality of threaded lugs projecting in spaced relation from the outerperiphery of said concave element, an

annular shelf superimposed in spaced relation with resaid shelf, saidmechanism being actuable to direct securing pressure against said nutand said shelf for locking said concave element to said supporting ringand being actuable upon release to relieve the securing pressure againstsaid nut and said shelf and permit movement of said concave element.relative to said ring.

2. In a cone ore crushing apparatus including an up- 5 standing framemember having an outwardly projecting flange on the upper end thereof, asupporting ring carried by said flange, a concave supporting elementpositioned within said ring and threadedly attached to said ring, aplurality of threaded lugs projecting in spaced relation from the outerperiphery of said concave element, an annular shelf superimposed inspaced relation with respect to said lugs and carried by said ring, anupstanding stud extending through each lug and the adjacent portion ofsaid shelf and in threaded engagement with said lug and having theportion adjacent the upper end projecting beyond said shelf, and a nutin threaded engagement with the projecting portion of each of saidstuds, the nut being spaced above said shelf, the improvement comprisinga releasable pressure applying mechanism including a pair of abutmentelements connected together for movement toward and away from eachother, and pressure applying means operatively connected to saidabutment elements for effecting the movements of said abutment elements,said mechanism being positioned so that the abut- 6 ment elementssurround the portion of each stud between the adjacent nut and theadjacent portion of said shelf with one of the abutments bearing againstsaid nut and the other of the abutment elements bearing against theadjacent portion of said shelf, said abutment elements being actuable todirect securing pressure against said nut and said shelf for lockingsaid concave element to said supporting rings and being actuable uponrelease to relieve the securing pressure against said nut and said shelfand permit movement of said concave element relative to said ring.

References Cited in the file of this patent UNITED STATES PATENTS1,868,338 Symons July 19, 1932 2,556,641 Bakewell June 12, 19512,679,984 Gruender June 1, 1954 2,680,571 Bjarme June 8, 1954 2,687,257Rumpel Aug. 24, 1954 2,791,383 Kjelgaard May 7, 1957

